By American Institute of Chemical Engineers (AIChE)
With its engineer-tested tactics and thorough reasons, Centrifugal Compressors is a necessary textual content for an individual engaged in imposing new know-how in apparatus layout, determining approach difficulties, and optimizing apparatus functionality. This condensed publication provides a step-by-step method of getting ready for, making plans, executing, and studying exams of centrifugal compressors, with an emphasis on tools that should be performed on-site and with an acknowledgement of the strengths and boundaries of those tools. The booklet opens with an intensive and specific part supplying de. Read more...
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Additional resources for AIChE Equipment Testing Procedure - Centrifugal Compressors : A Guide to Performance Evaluation and Site Testing
4 0 9 . 1 . 2 When manometers are used, fluid of suitable gravity should be selected such that the minimum fluid level to be read gives the required accu racy. An inclined manometer may be used to increase the accuracy of small pressure differential readings. Total pressure may be obtained either by meas uring static pressure and calculating velocity pressure, or by direct measure ment with the use of a "total" (pitot) probe. 4 0 9 . 1 . 3 Static pressure may be measured by means of a pitot static tube, or by drilling a hole in the pipe.
1 The methods and instrument to be used are a function of the test gas. When air is used as the test medium, a simple measurement of the amount of water vapor present is sufficient. Specific gravity may be measured for other test gases. 4 0 9 . 2 . 2 If the test gas is a mixture, samples must be taken for analysis by spectrographic, Chromatographie or chemical means. This analysis must con sist of identification of constituents and a measure of the mole percent of each. 4 0 9 . 2 . 3 Extreme care must be exercised when obtaining the sample.
4 After one complete set of data is recorded, a second set must be taken. A mini mum of two sets of data should be taken for each point. Readings are taken for flow variations from the maximum flow operating point (close to overload) to the minimum flow operating point (close to surge). 32 Centrifugal Compressors How Does A Centrifugal Compressor Work? t ορί»τπυτι COrjitiDfrS $ieps 2-5 #ic f w e a l e d at fre uifter stages untEi :tse resumed cüsatarge press ^ e is achieved. Al :he r+jrycie g,is inlel of lh*i sy a ga$ compresses, the trrake up gas * j o t « d ^i(rt f l i t recycle gas The side sfceerr ptefium area anowi me n a * f l up gas and Ihe recycle gas to rrn* and ente* Eh* f ecycte spelter The üiffuMr confirms to change the ^ιπβΐκ; energy of the gas ί vetoes -y} ^tt> notsrftat eoergy (pPSS*uri| T * * / e t y o e ffTOftWer accelerates EJQC^ the make up gas an« the recycle gas.
AIChE Equipment Testing Procedure - Centrifugal Compressors : A Guide to Performance Evaluation and Site Testing by American Institute of Chemical Engineers (AIChE)